FR256 datasheet(2/2 Pages) LRC

Part #	FR256

Description	2.5A FAST RECOVERY DIODES

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Manufacturer	LRC [Leshan Radio Company]

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LESHAN RADIO COMPANY, LTD.

19A–2/2

FR251 – FR257P

2.5A

RATING & CHARACTERISTIC CURVES OF 2.5A FAST DIODES

FIG. 2 – TYPICAL FORWARD

CURRENT DERATING CURVE

AMBIENT TEMPER ATURE, (ºC)

+0.5A

0

-0.25A

-1.0A

1cm

Trr

NOTES:1.Rise Time=7ns max.

Input Impedance=1megohm.22pF.

2.Rise Time=10ns max.

Source Impedance=50 ohms.

(+)

PULSE

GENERAT O R

(NOTE 2)

(-)

D.U.T.

OSCILLOSCOPE

(NOTE 1)

1

Ω

NON.

INDUCTIVE

(+)

25Vdc

(APPROX)

(-)

50

Ω

10

Ω

NONINDUCTIVE

FIG.1–TEST CIRCUIT DIAGRAM AND

REVERSE RECOVERY TIME CHARACTERISTIC

SET TIME

BASE FOR 50/100ns/cm

INSTANTANEOUS FORWARD VOLTAGE, (%)

FIG. 3 – TYPICAL INSTANTANEOUS

FORWARD CHARACTERISTICS

FIG. 5 – TYPICAL JUNCTION CAPACITANCE

FIG. 4 – MAXINUM NON-REPETITIVE

FOWARD SURGE CURRENT

REVERSE VOLTAGE,(V)

NUMBER OF CYCLES AT 60Hz

.4

.6

.8

1.0

1.2

1.4

1.6

1.8

20

10

3.0

1.0

0.3

0.1

.03

.01

TJ =25ºC

Pulse Width=300

µs

1% Duty Cycle

8.3ms Single Half Sine-Wave

(JEDEC Method)

105

90

75

60

45

30

15

0

1

2

5

10

20

50

100

.1

.2

.4

1.0

2

4

10

20

40

100

200

100

60

40

20

10

6

4

2

1

TJ =25ºC

0

25

50

75

100

125

150

175

2.5

2.0

.1.5

1.0

.5

0

Single Phase

Half Wave 60Hz

Resistive or

Inductive Load

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